DE3402357C2 - - Google Patents
Info
- Publication number
- DE3402357C2 DE3402357C2 DE3402357A DE3402357A DE3402357C2 DE 3402357 C2 DE3402357 C2 DE 3402357C2 DE 3402357 A DE3402357 A DE 3402357A DE 3402357 A DE3402357 A DE 3402357A DE 3402357 C2 DE3402357 C2 DE 3402357C2
- Authority
- DE
- Germany
- Prior art keywords
- vanadate
- water
- ammonium
- vanadium
- alkali metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 11
- 229910052720 vanadium Inorganic materials 0.000 claims description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 11
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- UPDATVKGFTVGQJ-UHFFFAOYSA-N sodium;azane Chemical compound N.[Na+] UPDATVKGFTVGQJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000003682 vanadium compounds Chemical class 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- OGUCKKLSDGRKSH-UHFFFAOYSA-N oxalic acid oxovanadium Chemical compound [V].[O].C(C(=O)O)(=O)O OGUCKKLSDGRKSH-UHFFFAOYSA-N 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 150000004760 silicates Chemical class 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- PAJMKGZZBBTTOY-UHFFFAOYSA-N 2-[[2-hydroxy-1-(3-hydroxyoctyl)-2,3,3a,4,9,9a-hexahydro-1h-cyclopenta[g]naphthalen-5-yl]oxy]acetic acid Chemical compound C1=CC=C(OCC(O)=O)C2=C1CC1C(CCC(O)CCCCC)C(O)CC1C2 PAJMKGZZBBTTOY-UHFFFAOYSA-N 0.000 claims 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims 1
- 150000008041 alkali metal carbonates Chemical class 0.000 claims 1
- 229910001514 alkali metal chloride Inorganic materials 0.000 claims 1
- 150000001339 alkali metal compounds Chemical class 0.000 claims 1
- 229910052936 alkali metal sulfate Inorganic materials 0.000 claims 1
- 238000009826 distribution Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 description 13
- 239000000155 melt Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 235000017550 sodium carbonate Nutrition 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 4
- 239000007832 Na2SO4 Substances 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010414 supernatant solution Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 238000012993 chemical processing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- -1 compounds potassium meta-vanadate Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G31/00—Compounds of vanadium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843402357 DE3402357A1 (de) | 1984-01-25 | 1984-01-25 | Verfahren zur herstellung von vanadiumverbindungen aus vanadiumhaltigen rueckstaenden |
| GB8500827A GB2154565B (en) | 1984-01-25 | 1985-01-14 | Recovery of vanadium from crude petroleum residues |
| US06/692,022 US4645651A (en) | 1984-01-25 | 1985-01-16 | Method of producing vanadium compounds from vanadium-containing residues |
| AT9785A ATA9785A (de) | 1984-01-25 | 1985-01-16 | Verfahren zur herstellung von vanadiumverbindungen aus vanadiumhaltigen rueckstaenden |
| FR8500858A FR2558458A1 (fr) | 1984-01-25 | 1985-01-22 | Procede pour fabriquer des composes de vanadium a partir de residus contenant du vanadium |
| JP60009315A JPS60166228A (ja) | 1984-01-25 | 1985-01-23 | バナジウムを含んだ残さいからバナジウム化合物を製造する方法 |
| IT1918985A IT1184125B (it) | 1984-01-25 | 1985-01-23 | Procedimento per la preparazione di composti al vanadio da residui contenenti vanadio |
| LU85735A LU85735A1 (de) | 1984-01-25 | 1985-01-24 | Verfahren zur herstellung von vanadiumverbindungen aus vanadiumhaltigen rueckstaenden |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843402357 DE3402357A1 (de) | 1984-01-25 | 1984-01-25 | Verfahren zur herstellung von vanadiumverbindungen aus vanadiumhaltigen rueckstaenden |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3402357A1 DE3402357A1 (de) | 1985-08-01 |
| DE3402357C2 true DE3402357C2 (fi) | 1989-02-09 |
Family
ID=6225773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19843402357 Granted DE3402357A1 (de) | 1984-01-25 | 1984-01-25 | Verfahren zur herstellung von vanadiumverbindungen aus vanadiumhaltigen rueckstaenden |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4645651A (fi) |
| JP (1) | JPS60166228A (fi) |
| AT (1) | ATA9785A (fi) |
| DE (1) | DE3402357A1 (fi) |
| FR (1) | FR2558458A1 (fi) |
| GB (1) | GB2154565B (fi) |
| IT (1) | IT1184125B (fi) |
| LU (1) | LU85735A1 (fi) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATA212086A (de) * | 1985-10-05 | 1989-11-15 | Elektrometallurgie Gmbh | Verfahren zur extraktion von vanadium aus vanadiumhaltigen rohstoffen |
| JPS632810A (ja) * | 1986-06-23 | 1988-01-07 | Shinko Kagaku Kogyo Kk | バナジウム回収方法 |
| US4816236A (en) * | 1986-08-28 | 1989-03-28 | U.S. Vanadium Corporation | Recovery of vanadium and nickel from petroleum residues |
| GB2194941B (en) * | 1986-09-10 | 1990-04-04 | Uralsky Inst Chernykh Metall | Process for recovering vanadium values |
| US5277795A (en) * | 1989-06-13 | 1994-01-11 | Thornhill Denis H | Process and apparatus for recovering heavy metal from carbonaceous material |
| DE4213328A1 (de) * | 1991-11-13 | 1993-10-28 | Metallgesellschaft Ag | Verfahren zum Behandeln eines vanadiumhaltigen Rückstands |
| CN1043340C (zh) * | 1994-03-27 | 1999-05-12 | 攀枝花钢铁(集团)公司 | 彩色陶瓷制品原料 |
| GB2294255A (en) * | 1994-10-17 | 1996-04-24 | Magmint Ltd | Vanadium recovery process |
| JP3085634B2 (ja) * | 1994-11-17 | 2000-09-11 | 鹿島北共同発電株式会社 | 高純度バナジウム電解液の製造法 |
| KR100345416B1 (ko) * | 1994-12-08 | 2002-10-25 | 에스케이 주식회사 | 정유공정 탈황용 폐촉매를 원료로하여 소디움메타바나데이트를 제조하는 방법 |
| US5545805A (en) * | 1995-06-07 | 1996-08-13 | Chesner Engineering, Pc | Enhanced stabilization of lead in solid residues using acid oxyanion and alkali-metal carbonate treatment |
| CN100523232C (zh) * | 2006-01-24 | 2009-08-05 | 彭新宇 | 高效碱基固氯复合提钒添加剂 |
| DE102007010776B4 (de) | 2007-03-06 | 2008-11-13 | Gfe Metalle Und Materialien Gmbh | Verfahren zur Herstellung eines schwermetallangereicherten, kohlenstoffarmen Konzentrats aus kohlenstoffreichen, schwermetallhaltigen Rückständen insbesondere der Erdölverarbeitung |
| CN100526489C (zh) * | 2007-06-19 | 2009-08-12 | 昆明理工大学 | 从高钙、高铁钢渣中回收钒和铁的新工艺 |
| AU2011256118B2 (en) * | 2010-05-19 | 2016-04-07 | Tivan Limited | Method for the extraction and recovery of vanadium |
| US8277766B2 (en) | 2010-12-27 | 2012-10-02 | Hnat James G | Methods for the concentration of vanadium from carbonaceous feedstock materials |
| MX359547B (es) * | 2011-12-21 | 2018-10-02 | Corex Mat Inc | Método de recuperación para una extracción de calcio continua y producción de carbonato de calcio precipitado (pcc). |
| US9896742B2 (en) * | 2013-05-17 | 2018-02-20 | Institute Of Process Engineering, Chinese Academy Of Sciences | Method for processing vanadium-titanium magnetite finished ores by using wet process |
| WO2018165524A1 (en) | 2017-03-09 | 2018-09-13 | Worcester Polytechnic Institute | Vanadium recovery method |
| CN108928851B (zh) * | 2017-05-24 | 2021-08-03 | 中国科学院过程工程研究所 | 一种由钒酸钠溶液制备钒酸铵钠的方法 |
| RU2647725C1 (ru) * | 2017-06-29 | 2018-03-19 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Способ извлечения ванадия из нефтяного кокса |
| RU2694937C1 (ru) * | 2018-01-18 | 2019-07-18 | Игорь Григорьевич Тертышный | Способ получения оксидов кремния, алюминия и железа при комплексной безотходной переработке из золошлаковых материалов |
| CN114134346B (zh) * | 2021-11-30 | 2022-08-12 | 大连理工大学 | 一种连续离子膜脱钠-沉钒的方法 |
| CN114890476B (zh) * | 2022-05-25 | 2023-08-18 | 中国科学院过程工程研究所 | 一种从含钒酸性草酸铵溶液中分离制备偏钒酸铵的方法 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US831280A (en) * | 1906-06-02 | 1906-09-18 | James Otis Handy | Process of treating vanadium ores. |
| US2187750A (en) * | 1936-07-31 | 1940-01-23 | Marvin Metals Inc | Treatment of ores |
| GB1062099A (en) * | 1963-04-26 | 1967-03-15 | Degussa | Process for solubilizing vanadium and optionally for obtaining ammonium metavanadate or v o |
| US3792150A (en) * | 1972-03-10 | 1974-02-12 | Kerr Mc Gee Chem Corp | Method of roasting vanadium bearing materials |
| NL7308789A (fi) * | 1973-06-25 | 1974-12-30 | ||
| US3853982A (en) * | 1973-11-07 | 1974-12-10 | Bethlehem Steel Corp | Method for recovering vanadium-values from vanadium-bearing iron ores and iron ore concentrates |
| NL7416555A (nl) * | 1974-12-19 | 1976-06-22 | Akzo Nv | Werkwijze voor het winnen van metalen uit ver- bruikte ontzwavelingskatalysatoren. |
| DE2833203A1 (de) * | 1978-07-27 | 1980-02-07 | Siemens Ag | Messwandler mit einer von einem zu messenden strom durchflossenen primaerwicklung |
| JPS5527012A (en) * | 1978-08-14 | 1980-02-26 | Hitachi Ltd | Centrifugal separator |
| US4298581A (en) * | 1980-04-15 | 1981-11-03 | Cabot Corporation | Process for recovering chromium, vanadium, molybdenum and tungsten values from a feed material |
| US4298582A (en) * | 1980-04-15 | 1981-11-03 | Cabot Corporation | Vanadium recovery from scrap alloys |
| CA1169661A (en) * | 1980-10-14 | 1984-06-26 | Lois L. Mccorriston | Process using carbonate reagent for recovering vanadium from cokes derived from heavy oils |
| US4389378A (en) * | 1980-10-20 | 1983-06-21 | Gulf Canada Limited | Process using sulphate reagent for recovering vanadium from cokes derived from heavy oils |
| US4420464A (en) * | 1981-10-26 | 1983-12-13 | Rockwell International Corporation | Recovery of vanadium from carbonaceous materials |
| US4477416A (en) * | 1982-09-27 | 1984-10-16 | Union Carbide Corporation | Salt roasting of vanadium ore in the presence of carbon |
-
1984
- 1984-01-25 DE DE19843402357 patent/DE3402357A1/de active Granted
-
1985
- 1985-01-14 GB GB8500827A patent/GB2154565B/en not_active Expired
- 1985-01-16 US US06/692,022 patent/US4645651A/en not_active Expired - Fee Related
- 1985-01-16 AT AT9785A patent/ATA9785A/de not_active Application Discontinuation
- 1985-01-22 FR FR8500858A patent/FR2558458A1/fr not_active Withdrawn
- 1985-01-23 JP JP60009315A patent/JPS60166228A/ja active Pending
- 1985-01-23 IT IT1918985A patent/IT1184125B/it active
- 1985-01-24 LU LU85735A patent/LU85735A1/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT8519189A0 (it) | 1985-01-23 |
| ATA9785A (de) | 1990-09-15 |
| LU85735A1 (de) | 1985-07-24 |
| GB2154565A (en) | 1985-09-11 |
| GB8500827D0 (en) | 1985-02-20 |
| IT1184125B (it) | 1987-10-22 |
| GB2154565B (en) | 1988-06-15 |
| JPS60166228A (ja) | 1985-08-29 |
| DE3402357A1 (de) | 1985-08-01 |
| FR2558458A1 (fr) | 1985-07-26 |
| US4645651A (en) | 1987-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3402357C2 (fi) | ||
| DE3509373C2 (fi) | ||
| DE2231595B2 (de) | Verfahren zur Reinigung von beim Auslaugen von Zinkerzen anfallenden Zinksulfat-Lösungen | |
| EP0017741B1 (de) | Verfahren zur Überführung von Extraktionsrückständen aus der Phosphorsäurereinigung in feste Deponieprodukte | |
| DE2951749C2 (fi) | ||
| DE2917905A1 (de) | Verfahren zur gewinnung von rutil | |
| DE1767530A1 (de) | Verfahren zur aufarbeitung der hydrolysemutterlaugen saurer titanerzaufschluesse | |
| DE2652766A1 (de) | Verfahren zur herstellung von phosphorsaeure aus phosphatgestein | |
| DE3604483A1 (de) | Verfahren zum entfernen von schwermetallen aus mineralsaeuren | |
| DE2120580B2 (de) | Verfahren zum reinigen von rohem molybdaenoxyd | |
| DE3711371A1 (de) | Verfahren zur gewinnung von v(pfeil abwaerts)2(pfeil abwaerts)o(pfeil abwaerts)5(pfeil abwaerts) | |
| DE2407948C3 (de) | Verfahren zur konzentrierung von gallium | |
| DE2807245A1 (de) | Verfahren und vorrichtung zur herstellung von grobem aluminiumoxid | |
| DE2729755A1 (de) | Verfahren zur herstellung von titandioxid durch diskontinuierliches aufschliessen von ilmeniterzen mit schwefelsaeure | |
| DE3022874A1 (de) | Verfahren zur herstellung von tantal-konzentraten | |
| EP0184690B1 (de) | Verfahren zur Entarsenierung von phosphorsauren Lösungen | |
| EP0206022A2 (de) | Verfahren zur Aufarbeitung von schwermetallhaltigen Rückständen aus der Reinigung von Rohphosphorsäuren | |
| DE2461064C2 (de) | Verfahren zur Herstellung reiner Alkaliphosphatlösungen aus Naßverfahrensphosphorsäure | |
| DE3600038C2 (fi) | ||
| DE2810878A1 (de) | Verfahren zur rueckgewinnung von aetzalkali aus verbrauchter alkalilauge | |
| DE2557550A1 (de) | Verfahren zur herstellung von duengemitteln und bodenverbesserungsmittel | |
| CH677933A5 (fi) | ||
| DE1910479A1 (de) | Verfahren zum Gewinnen von Vanadium aus nickelhaltigen Vanadiumverbindungen oder vanadiumhaltigen Erdoel-Rueckstaenden | |
| DE2801067A1 (de) | Verfahren zur herstellung einer ammoniummolybdatverbindung | |
| EP0191325B1 (de) | Verfahren zur Herstellung von Nassverfahrensphosphorsäure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |